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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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Thyroid conditions may make getting pregnant impossible.

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